/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

#ifndef _THRIFT_THRIFT_H_
#define _THRIFT_THRIFT_H_ 1

#include <thrift/thrift-stdint.h>
#include <thrift/thrift-config.h>

#include <stdio.h>
#include <assert.h>
#include <string>
#include <map>
#include <list>
#include <set>
#include <vector>
#include <exception>
#include <typeinfo>

#include <boost/utility/enable_if.hpp>
#include <boost/type_traits/is_convertible.hpp>
#include <boost/function.hpp>

#include <thrift/TLogging.h>
#include <thrift/TToString.h>

/**
 * Helper macros to allow function overloading even when using
 * boost::shared_ptr.
 *
 * shared_ptr makes overloading really annoying, since shared_ptr defines
 * constructor methods to allow one shared_ptr type to be constructed from any
 * other shared_ptr type.  (Even if it would be a compile error to actually try
 * to instantiate the constructor.)  These macros add an extra argument to the
 * function to cause it to only be instantiated if a pointer of type T is
 * convertible to a pointer of type U.
 *
 * THRIFT_OVERLOAD_IF should be used in function declarations.
 * THRIFT_OVERLOAD_IF_DEFN should be used in the function definition, if it is
 * defined separately from where it is declared.
 */
#define THRIFT_OVERLOAD_IF_DEFN(T, Y)                                                              \
  typename ::boost::enable_if<typename ::boost::is_convertible<T*, Y*>::type, void*>::type

#define THRIFT_OVERLOAD_IF(T, Y) THRIFT_OVERLOAD_IF_DEFN(T, Y) = NULL

#define THRIFT_UNUSED_VARIABLE(x) ((void)(x))

namespace apache {
namespace thrift {

class TEnumIterator : public std::map<int, const char*>::iterator
{
public:
	TEnumIterator(int n, int* enums, const char** names)
		: ii_(0)
		, n_(n)
		, enums_(enums)
		, names_(names)
	{
	
	}

	int operator++()
	{
	  return ++ii_;
	}

	bool operator!=(const TEnumIterator& end)
	{
		(void)end; // avoid "unused" warning with NDEBUG
		assert(end.n_ == -1);
		return (ii_ != n_);
	}

	bool operator==(const TEnumIterator& end)
	{
		(void)end; // avoid "unused" warning with NDEBUG
		assert(end.n_ == -1);
		return (ii_ == n_);
	}

	std::map<int, const char*>::value_type operator*() const
	{
	  return std::make_pair(enums_[ii_], names_[ii_]);
	}

private:
	int ii_;
	const int n_;
	int* enums_;
	const char** names_;
};

class TException : public std::exception
{
public:
  TException() : message_()
  {
  
  }

  TException(const std::string& message)
	  : message_(message)
  {
  
  }

  virtual ~TException() throw()
  {
  
  }

  virtual const char* what() const throw()
  {
    if (message_.empty()) {
      return "Default TException.";
    }
	else {
      return message_.c_str();
    }
  }

protected:
  std::string message_;
};

class TDelayedException
{
public:
  template <class E>
  static TDelayedException* delayException(const E& e);
  virtual void throw_it() = 0;
  virtual ~TDelayedException()
  {
  
  };
};

template <class E>
class TExceptionWrapper : public TDelayedException
{
public:
  TExceptionWrapper(const E& e) : e_(e) {}
  virtual void throw_it() {
    E temp(e_);
    delete this;
    throw temp;
  }

private:
  E e_;
};

template <class E>
TDelayedException* TDelayedException::delayException(const E& e)
{
  return new TExceptionWrapper<E>(e);
}

#if T_GLOBAL_DEBUG_VIRTUAL > 1
void profile_virtual_call(const std::type_info& info);
void profile_generic_protocol(const std::type_info& template_type, const std::type_info& prot_type);
void profile_print_info(FILE* f);
void profile_print_info();
void profile_write_pprof(FILE* gen_calls_f, FILE* virtual_calls_f);
#endif
}
} // apache::thrift

#endif // #ifndef _THRIFT_THRIFT_H_
